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I removed the fuel line where the fuel is fed into the injector pump from the sediment bowl, and after 6 hours the tank is still not empty (the sediment bowl shows full and the fuel gauge shows about 1/8 tank though the machine is on an incline so it is hard to tell 100% where the level is).
So I am thinking that perhaps the screens are blocked coming out of the fuel tank and/or sediment bowl? The fastest fuel came out was just above a trickle and now is down to a drip about every 1/2 second or so.
Regarding the lift pump, if I crank the engine with the hose disconnected from the pump, I should see flow, no?
Regarding the oil level in the fuel injection pump, it is somewhat difficult to check because the machine is on an incline. But there does appear that there is some oil in the pump I just can't tell exactly how much.
I will check the tank and bowl for screens and obstructions.
Fuel bowl is clean. Also, no sign of sludge. If there is fuel flow when I loosen the bolt at the intake of the pump where it is gravity fed from the sediment bowl (and fuel tank), would that mean the screen exiting the sediment bowl is OK? I'm guessing the next test would be to disconnect the hose at the outlet of the fuel pump but before the fuel filter and see if I get any fuel coming out there when I crank the engine?
Someone else mentioned sucking air, but that seems remote and difficult to troubleshoot.
